Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Saint Johns Green experiences a temperature shift with the start of May, with average high-temperatures moving from a refreshing 63.1°F (17.3°C) in April to a pleasant 72.5°F (22.5°C). Saint Johns Green observes an average nighttime low-temperature of 55.2°F (12.9°C) during the month of May.Humidity
The months with the highest humidity in Saint Johns Green are May and October, with an average relative humidity of 77%.Rainfall
In Saint Johns Green, Maryland, in May, it is raining for 18.2 days, with typically 3.11" (79mm) of accumulated precipitation. In Saint Johns Green, during the entire year, the rain falls for 165.5 days and collects up to 31.65" (804mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May in Saint Johns Green is 14h and 21min.On the first day of May, sunrise is at 6:07 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:27 pm EDT.
Sunshine
The average sunshine in May in Saint Johns Green is 8.9h.UV index
The months with the highest UV index in Saint Johns Green are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In May, the maximum UV index of 6 translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are May temperatures in Saint Johns Green?
What are the most humid months in Saint Johns Green?
What is the average humidity in May in Saint Johns Green?
How many days does it rain in May in Saint Johns Green?
When it does not snow in Saint Johns Green?
Does it snow in Saint Johns Green in May?
What is the average length of the day in May in Saint Johns Green?
What time are sunrise and sunset in May in Saint Johns Green?
How long on average sun shines in May in Saint Johns Green?
What are the months with the highest UV index in Saint Johns Green?
How high is the UV index in May in Saint Johns Green?
Average temperature in May
Saint Johns Green, MD
- Average high temperature in May: 72.5°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in May: 55.2°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in May
Saint Johns Green, MD
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Saint Johns Green, MD
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Saint Johns Green, MD
- Average humidity in May: 77%
The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in May
Saint Johns Green, MD
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in May
Saint Johns Green, MD
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in May
Saint Johns Green, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Saint Johns Green, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Saint Johns Green, MD
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Saint Johns Green, MD
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Saint Johns Green, MD
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Saint Johns Green, MD
- Average cloud cover in May: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in May
Saint Johns Green, MD
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Johns Green, Maryland, USA
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